201221080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{116989}}^1$

素因数の和:117043

約数の個数: 32

約数和(自身を含む): 463280400

約数和(自身を除く): 262059320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 116989, 233978, 467956, 584945, 935912, 1169890, 2339780, 4679560, 5030527, 10061054, 20122108, 25152635, 40244216, 50305270, 100610540, 201221080]

約数ペア:

[(1, 201221080), (2, 100610540), (4, 50305270), (5, 40244216), (8, 25152635), (10, 20122108), (20, 10061054), (40, 5030527), (43, 4679560), (86, 2339780), (172, 1169890), (215, 935912), (344, 584945), (430, 467956), (860, 233978), (1720, 116989)]